620 LAUREL DR 2025-04-16 - Laserfiche WebLink

qUESNumber: ® Originally Issued: 03/08/2018 Revised: 05/03/2021 Valid Through: 03/31/2022 TABLE 4—NFPA 285 COMPLYING EXTERIOR WALL ASSEMBLIES WITH HEATLOK®HFO INSTALLED ON THE EXTERIOR SIDE OF THE WALL ASSEMBLY Wall Component Materials Base Wall System(BWS)- 1. Concrete Wall. Use either 1,2,or 3 2. Concrete Masonry Wall. 3. 1 layer of 5/8-inch-thick Type X gypsum wallboard installed on the interior side of minimum 35/8-inch deep,minimum 25-gauge equivalent thick steel studs spaced a maximum of 24 inches on center. Lateral bracing installed minimum every 4 foot vertically or as required. Perimeter Fire Barrier System 1. Perimeter fire barrier system complying with Section 715.4 of the IBC shall be installed,as applicable,to fill the void between the edge of the concreter floor slab and the interior surface Use 1 or 2. of the exterior wall assembly. 2. Wall stud cavities shall be filled at each floor line with minimum 4 lb/ft3 mineral wool friction fit between steel wall studs,attached with Z-clips or friction fit. Interior Insulation—Use either 1. None 1,2,3,4 or 5 or combinations of 2. Full wall stud cavity depth or less of Heatlok®HFO Pro applied using exterior gypsum 3 with 4 or 3 with 5. sheathing of BWS 3 as the substrate and covering the width of the cavity and the inside of the steel wall stud framing flange.' 3. Fiberglass batt insulation(faced or unfaced) 4. Mineral wool insulation faced or unfaced Exterior Sheathing—use either 1 1. None(for BWS 1 or 2 above) or 2 2. 5/8-inch thick Type X exterior type gypsum sheathing for BWS 3 above Exterior Insulation 1. Maximum 31/2-inch thickness of Heatlok®HFO Pro(with Claddings 1-5,2-inch maximum air Use 1,2 or 3 gap between cladding and SPF). 2. Maximum 3-inch Heatlok HFO Pro SPF(with Claddings 6,7 and 8. Horizontal purlin every 2 feet maximum,no vertical Z girts. Purlin depth 1-inch deeper than SPF thickness. 1-inch maximum air gap between cladding and SPF. 3. Maximum 33/4-inch HeatLok HFO Pro(with Claddings 9-18,use coating—18 mils WFT DC315 with nine mils WFT Sherwin Williams Sher-Cryl HPA Topcoat with horizontal Z Girts 28 inches on center. 2-inch maximum air gap between cladding and SPF. Exterior wall covering—use any For use with Exterior Insulation 1 item 1-20 with specific insulation or coating—read 1. Brick—Standard type brick veneer anchors,installed a maximum of 24 inches on center, carefully. vertically on each stud with maximum 1-inch air gap between exterior insulation and brick. Brick to be standard nominal 4-inch thick clay brick installed in a running bond pattern using IMPORTANT Type S mortar. Use 1-5 only with Exterior 2. Stucco—Minimum 3/4-inch thick,exterior plaster and lath.A secondary water resistive barrier Insulation 1 (WRB)can be installed between the exterior insulation and lath. The secondary WRB shall not be full coverage asphalt or butyl based self-adhered membranes. Use 6,7 and 8 only with 3. Minimum 2-inch thick natural stone(granite,limestone,marble or sandstone)Any standard Exterior Insulation 2 non-open joint installation technique shall be used. 4. Minimum 0/2-inch thick concrete masonry unit(CMU),precast concrete or artificial cast Use 9-18 only with Exterior stone. Any standard non-open jointed method shall be used. Insulation 3 5. Minimum 11/4-inch thick terra cotta non-open jointed. Any standard non-open jointed installation technique shall be used. 1-inch maximum air gap between cladding and SPF for For use with Exterior Insulation 2 cladding 6,7 and 8 and insulation 2. 6. Vertical or horizontal flat 20 gauge minimum steel(or zinc galvanized steel)panels directly attached to horizontal purlin. Non-open joint. 2-inch maximum air gap with 7. STK 1000,STK 1500 Force Five,STK 2000,STK 2500 Force Five,STK 5000 or STK 5500 cladding 1-5 or claddings 9 Force Five panels or equivalent. Non-open joint. through 18. 8. Vertical or horizontal corrugated 20 gauge minimum steel(or galvanized steel)panels(2-inch maximum corrugation depth)directly attached to horizontal purlin with no air gap(between cladding and SPF)at the shallowest depth of corrugation profile. Non-open joint. For use with Exterior Insulation 3 Page 6 of 7